• Title/Summary/Keyword: Place recognition

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Teachers' Recognition and Teaching Strategies for the Behavioral Problems of Young Children according to Their Demographic Characteristics and Ego-resiliency (유아교사의 사회 인구학적 요인 및 자아탄력성 수준에 따른 유아 문제행동 인식과 지도전략)

  • Jung, Ho Kyung;Lee, Si Ja
    • Korean Journal of Childcare and Education
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    • v.10 no.6
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    • pp.347-368
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    • 2014
  • The purpose of this study was to examine whether there was a difference in the recognition and teaching strategies for the young child's behavioral problems according to teachers' socio-demographic variables and ego-resiliency level by analyzing survey responses from 238 teachers of 3, 4, and 5-year-old children. This study found that the group of teachers with the education level of junior college graduation or higher showed higher degree of recognition of children's behavioral problems than the group of teachers with a lower level of education. And the group of teachers at kindergartens showed a higher degree of recognition of children's behavioral problems than the group of teachers at day care centers. Regarding the difference according to the level of ego-resiliency, the group of higher ego-resiliency showed higher degree of recognition of children's behavioral problems than the group of lower ego-resiliency. In terms of teachers' teaching strategies for the behavioral problems, differences were recognized at sub-categories. To explain, differences were recognized in accordance with the teachers' age and career as well as their education level and work place; the higher the teachers' age, career, and education the more often they used the positive prevention strategy I. And teachers at kindergartens resorted to the negative response strategies more often than those at day care centers. Finally, the teaching strategies for the behavioral problems according to the teachers' ego-resiliency, group differences were seen in all the sub categories. The result of this study suggested that the need to develop and apply such programs for pre-service teachers and for teacher reeducation reflect those variables.

An Efficient Estimation of Place Brand Image Power Based on Text Mining Technology (텍스트마이닝 기반의 효율적인 장소 브랜드 이미지 강도 측정 방법)

  • Choi, Sukjae;Jeon, Jongshik;Subrata, Biswas;Kwon, Ohbyung
    • Journal of Intelligence and Information Systems
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    • v.21 no.2
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    • pp.113-129
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    • 2015
  • Location branding is a very important income making activity, by giving special meanings to a specific location while producing identity and communal value which are based around the understanding of a place's location branding concept methodology. Many other areas, such as marketing, architecture, and city construction, exert an influence creating an impressive brand image. A place brand which shows great recognition to both native people of S. Korea and foreigners creates significant economic effects. There has been research on creating a strategically and detailed place brand image, and the representative research has been carried out by Anholt who surveyed two million people from 50 different countries. However, the investigation, including survey research, required a great deal of effort from the workforce and required significant expense. As a result, there is a need to make more affordable, objective and effective research methods. The purpose of this paper is to find a way to measure the intensity of the image of the brand objective and at a low cost through text mining purposes. The proposed method extracts the keyword and the factors constructing the location brand image from the related web documents. In this way, we can measure the brand image intensity of the specific location. The performance of the proposed methodology was verified through comparison with Anholt's 50 city image consistency index ranking around the world. Four methods are applied to the test. First, RNADOM method artificially ranks the cities included in the experiment. HUMAN method firstly makes a questionnaire and selects 9 volunteers who are well acquainted with brand management and at the same time cities to evaluate. Then they are requested to rank the cities and compared with the Anholt's evaluation results. TM method applies the proposed method to evaluate the cities with all evaluation criteria. TM-LEARN, which is the extended method of TM, selects significant evaluation items from the items in every criterion. Then the method evaluates the cities with all selected evaluation criteria. RMSE is used to as a metric to compare the evaluation results. Experimental results suggested by this paper's methodology are as follows: Firstly, compared to the evaluation method that targets ordinary people, this method appeared to be more accurate. Secondly, compared to the traditional survey method, the time and the cost are much less because in this research we used automated means. Thirdly, this proposed methodology is very timely because it can be evaluated from time to time. Fourthly, compared to Anholt's method which evaluated only for an already specified city, this proposed methodology is applicable to any location. Finally, this proposed methodology has a relatively high objectivity because our research was conducted based on open source data. As a result, our city image evaluation text mining approach has found validity in terms of accuracy, cost-effectiveness, timeliness, scalability, and reliability. The proposed method provides managers with clear guidelines regarding brand management in public and private sectors. As public sectors such as local officers, the proposed method could be used to formulate strategies and enhance the image of their places in an efficient manner. Rather than conducting heavy questionnaires, the local officers could monitor the current place image very shortly a priori, than may make decisions to go over the formal place image test only if the evaluation results from the proposed method are not ordinary no matter what the results indicate opportunity or threat to the place. Moreover, with co-using the morphological analysis, extracting meaningful facets of place brand from text, sentiment analysis and more with the proposed method, marketing strategy planners or civil engineering professionals may obtain deeper and more abundant insights for better place rand images. In the future, a prototype system will be implemented to show the feasibility of the idea proposed in this paper.

Current Situation and Modification of Kitchen Space by Elderly-headed Household (노인단독가구의 부엌공간 실태와 개조에 관한 연구)

  • Kwon, Oh-Jung;Kim, Mi-Hee;Ha, Hae-Wha
    • Proceeding of Spring/Autumn Annual Conference of KHA
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    • 2006.11a
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    • pp.144-148
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    • 2006
  • Kitchen space is one of the most dangerous places for the elderly. Modification of kitchen space for improving safety and independence for older residents is very important factor for aging -in-place. The purpose of this study wes to identify the current situation and modification of kitchen space by elderly-headed household. The sample included 108 respondents over the age 65 who consisted of elderly-couple or single person household with homeownership in Seoul. The data were analyzed by descriptive statistics. Based on the findings of the study, the present incidence and recognition of future need in kitchen modification were identified. Changes in kitchen space made tended to be nonstructural or relatively inexpensive items. In conclusion, this study suggests several ideas for improving current physical problems of kitchen space to support daily living of older residents.

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Evaluation of CAPTCHA Efficiency

  • Youthasoontorn, Passzarkorn;Phaibulpanich, Akarin;Piromsopa, Krerk
    • Journal of Information Technology Applications and Management
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    • v.22 no.3
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    • pp.55-64
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    • 2015
  • We propose statistical methods for evaluating the efficiency of CAPTCHA. Most people unfairly assumed that machines are not capable at reading precisely. This fact leads to the invention of CAPTCHA, a distorted word or short phase, which is designed to thwart computers and separate human from machines. However, advances in image recognition technologies mean that machines are constantly getting better at recognizing CAPTCHA. This forces CAPTCHA designers to design even more difficult CAPTCHAs to prevent their systems from being gamed by malicious bots. However, this arm race has an unintended side effect on the common users. Many CAPTCHAs are now so hard that many people are unable to read them. This obviously conflicts with the original purpose that CAPTCHA was invented in the first place. Our analysis shows that some CAPTCHAs are more users friendly. In particular, Yahoo-style CAPTCHA is the most friendliness. This suggests that a good CAPTCHA could be a simple text with some distortion that prevents machines from correctly segmenting characters.

Consonant Confusions Matrices in Adults with Dysarthria Associated with Cerebral Palsy (뇌성마비로 인한 마비말장애 성인의 자음 오류 분석)

  • Lee, Youngmee;Sung, JeeEun;Sim, HyunSub
    • Phonetics and Speech Sciences
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    • v.5 no.1
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    • pp.47-54
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    • 2013
  • The aim of this study was to analyze consonant articulation errors produced by 90 speakers with cerebral palsy (CP). Phonetic transcriptions were made for 37 single-word utterances containing 70 phonemes: 48 initial consonants and 22 final consonants. Errors of substitution, omission, and distortion were analyzed using a confusion matrix paradigm showing the visualization of error patterns. Results showed that substitution errors in initial and final consonants were most frequent, followed by omission and distortion. Consonant omission occurred more frequently on final consonants. In both initial and final consonants, the within-place errors were more prominent than the within-manner errors. The current results suggest that consonant confusion matrices for dysarthric speech may provide useful information for evaluating speech intelligibility and developing automatic speech recognition system of adults with CP associated dysarthria.

A study on the improvement of speech recognition for similar place names (유사지명 인식시의 성능 개선 연구)

  • 백승권;양희식;한민수
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2000.11b
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    • pp.49-53
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    • 2000
  • 본 연구에서는 DAB(Digital Audio Broadcasting) 시스템의 교통정보 검색 서비스를 위하여 경부선 및 호남선의 톨게이트가 위치한 49 개의 지명을 대상으로 이를 인식하고자 할 때 인식 율을 개선하였다. 지명 어휘의 특성을 분석한 결과 전체 지명의 81.6%가 2 음절이었으며 동일한 음절을 포함하는 지명이 전체의 구성된 어휘가 61%로 조사되었다. 시스템에서 인식율을 개선하기 위하여 인식 대상어휘를 3개의 set로 재분류하고 인식 대상 어휘로 판정된 후보 어휘에 대하여 인식 성공여부에 핵심이 되는 음절의 위치에 따라 가중치 윈도우를 적용하였다. 그 결과 화자 독립의 인식율 테스트에서 남성의 경우 7.2%, 여성의 경우 5.1%의 인식율 향상을 보였다.

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A Study on the Safety Culture of Korean National Railway (철도안전문화에 관한 연구)

  • Bhang, Youn-Keun;Wang, Jong-Bae;Moon, Dae-Seop
    • Proceedings of the KSR Conference
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    • 2004.06a
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    • pp.269-276
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    • 2004
  • This study tried to figure out the framework of safety culture in railway industry to analyze root causes of railway incidents and accidents at Korean National Railway. Through the literature survey, authors found some critical dimensions common to railway safety culture such as employees' belief in the managers' management weight on safety and productivity, recognition of safety importance, risk taking attitude, practice of safety meeting before and after doing work, communication between management and employees and among drivers, traffic managers and infrastructure maintenance workers, safety reporting practice, safety and performance appraisal, effectiveness of safety audit, safety training, work place arrangement, incidents and accidents investigation, and safety knowledge management.

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Multi-Camera-based Place Recognition using Nonstationary HMM (Nonstationary HMM을 이용한 다중 카메라 기반 장소 인식)

  • Min, Kyung-Min;Lee, Seong-Hun;Kim, Dong-Ho;Kim, Jin-Hyung
    • 한국HCI학회:학술대회논문집
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    • 2007.02a
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    • pp.50-57
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    • 2007
  • 사용자가 현재 위치해 있는 장소를 알아내는 것은 상황인식 분야에서 활발히 연구되고 있는 분야중 하나로, 이를 위해서 사용자의 몸에 다양한 센서를 장착하고 그 센서로부터 추출되는 데이터를 분석하여 사용자의 위치를 인식하는 연구가 많이 이루어져왔다. 본 논문에서는, 사용자의 몸에 장착된 카메라로부터 얻어진 영상을 이용하여 사용자의 현재 장소를 인식하는 장소 인식 시스템을 제안한다. 기존의 방법론들에 비해서 높은 성능을 보이기 위해서 본 논문에서는 두 가지 방법을 제안하였다. 먼저 한 방향만의 영상으로는 인식이 어려운 장소에서도 좋은 인식 성능을 보일 수 있도록 하기 위해, 여러 대의 카메라를 동시에 사용하여 여러 방향의 영상을 얻어내는 방법을 제안하였다. 또한 이전 시간의 장소 인식 결과로부터 현재 시간의 장소를 추론하는 데에 있어서, 각 장소들에 대해 알고 있는 사전지식을 보다 많이 적용할 수 있는 인식 모델을 제안하였다. 실제 대학 실내 환경에서의 실험을 통하여, 제안한 방법을 이용한 장소 인식기법이 좋은 성능을 보임을 확인할 수 있었다.

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A Study on Background Speaker Model Design for Portable Speaker Verification Systems (휴대용 화자확인시스템을 위한 배경화자모델 설계에 관한 연구)

  • Choi, Hong-Sub
    • Speech Sciences
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    • v.10 no.2
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    • pp.35-43
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    • 2003
  • General speaker verification systems improve their recognition performances by normalizing log likelihood ratio, using a speaker model and its background speaker model that are required to be verified. So these systems rely heavily on the availability of much speaker independent databases for background speaker model design. This constraint, however, may be a burden in practical and portable devices such as palm-top computers or wireless handsets which place a premium on computations and memory. In this paper, new approach for the GMM-based background model design used in portable speaker verification system is presented when the enrollment data is available. This approach is to modify three parameters of GMM speaker model such as mixture weights, means and covariances along with reduced mixture order. According to the experiment on a 20 speaker population from YOHO database, we found that this method had a promise of effective use in a portable speaker verification system.

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Numerical Algorithm for Distance Protection and Arcing Fault Recognitior (고장거리계산과 아크고장 판별 알고리즘)

  • Radojevic, Zoran;Park, K.W.;Park, J.S.
    • Proceedings of the KIEE Conference
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    • 2002.07a
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    • pp.163-165
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    • 2002
  • In this paper a new numerical algorithm for fault distance calculation and arcing fault recognition based on one terminal data and derived in lime domain is presented. The algorithm is derived for the case of most frequent single-phase line to ground fault. The faulted phase voltage at the fault place is modeled as a serial connection of fault resistance and arc voltage. The fault distance and arc voltage amplitude are estimated using Least Error Squares Technique. The algorithm can be applied for distance protection, intelligent autoreclosure and for fault location. The results of algorithm tested through computer simulation are given.

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